RS232 Module 13.2 with DB9 Female Connector Brand_Troika I would very much have

I would very much have appreciated it when I was 12 years old and first getting into electronics

3V regulator and some level shifting

and can easily be expanded with your shields

it makes quick work of WiFi and Bluetooth projects that take advantage of Espressifs most popular chipset

the built-in amp can drive 8 ohm speakers up to 1 Watt

RS232 Module 13.2 with DB9 Female Connector Brand_Troika I would very much haveThe RS232F Module 13. 2 is an expansion module of the RS232 serial communication with isolation, using the scheme of the TD301D232H serial port conversion chip and the female DB9 interface to give the interface conversion between RS232 and TTL CMOS logic level signals, and uses the F0505S 2WR3 DC DC power module to enable electrical and noise isolation function. With a toggle and coding switch, it can enable the pass through or cross switching of DB9